CN102096002A - Device for testing polarity of voltage transformer - Google Patents
Device for testing polarity of voltage transformer Download PDFInfo
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- CN102096002A CN102096002A CN2009102274486A CN200910227448A CN102096002A CN 102096002 A CN102096002 A CN 102096002A CN 2009102274486 A CN2009102274486 A CN 2009102274486A CN 200910227448 A CN200910227448 A CN 200910227448A CN 102096002 A CN102096002 A CN 102096002A
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Abstract
The invention discloses a device for testing the polarity of a voltage transformer. The device comprises a shell, wherein a 20V direct-current power supply is arranged in the shell; an anode and a cathode of the direct-current power supply are connected with a jack A1 and a jack A2 respectively; the jack A2 is connected with a switch; an intelligent current display mechanism is also arranged in the shell; and a positive terminal and a negative terminal of the intelligent current display mechanism are respectively provided with a jack B1 and a jack B2. The device can accurately check the polarity of a secondary winding of the voltage transformer, and the secondary winding can be prevented from being wrongly connected during wiring; and working efficiency is improved, and the stable operation of an electric system is ensured.
Description
Technical field:
The invention belongs to relay protection of power system and automatic safety device check out test set technical field, particularly a kind of device that is used for the test voltage mutual inductor polarity.
Background technology:
Transformer station is the power supply hinge of electric system, and it is powered to the user by the transformer in the transformer station.Wherein voltage transformer (VT) is the equipment that the high voltage (primary voltage) of transformer station is converted to low-voltage (secondary voltage), and the secondary voltage after its conversion provides the most basic data for the secondary device of transformer station.Voltage transformer (VT) is winding and Secondary Winding two parts composition once, one time winding connects high voltage circuit, the rated voltage of Secondary Winding is 57V, connect secondary device through the auxiliary air switch, can secondary device normally move key and be whether the secondary voltage after the mutual induction of voltage conversion is normal, so voltage transformer (VT) is extremely important in electric system.If the incorrect polarity of voltage transformer (VT) will cause the maloperation of the secondary device of transformer station, polarity test work looms large important more.The polarity of so-called voltage transformer (VT) is meant the polar end L1 of a winding of voltage transformer (VT), the polar end K1 of the Secondary Winding of non-polar end L2 and voltage transformer (VT), the corresponding relation of non-polar end K2.
But the polarity test work ubiquity workflow of electromagnetic potential transformer complexity and equipment are at random various at present, cause adverse effect for the safe operation of electrical network.Conventional now method of testing is that a people stands in the two ends that with two annealed copper wires the 9V battery are added in a winding of voltage transformer (VT) on the voltage transformer (VT), one people is added in the two ends of the Secondary Winding of voltage transformer (VT) with two annealed copper wire dc milliammeters at voltage transformer secondary connection terminal case, and the responsible pointer rotation situation that monitors dc milliammeter, a people is responsible for singing mutually the job step unanimity that makes above-mentioned two people.Therefore there are several problems in the working site: one, testing apparatus is scattered, and the equipment situation of taking has taken place to leak.The polarity test mistake appears in two, field wiring very complicated easily.Three, testing crew thread-changing and singing has mutually back and forth increased difficulty to work in the middle of invisible, has reduced work efficiency.Four, when the work in unity place cross-operation of many teams and groups appears, the easier test errors that occurs.
Summary of the invention:
The device that is used for the test voltage mutual inductor polarity that the invention provides and a kind ofly can accurately check the polarity of voltage transformer secondary winding, mistake has inserted, ensured the power system stability operation when avoiding wiring.
The device that is used for the test voltage mutual inductor polarity, comprise shell, the direct supply of a 20V is set in the described shell, the positive pole of described direct supply is connected A1 jack and A2 jack respectively with negative pole, described A2 jack connects a switch, an intelligent electric current indication mechanism also is set in the described shell, B1 jack and B2 jack are set respectively on the positive and negative binding post of described intelligent electric current indication mechanism.
Because the present invention will be by being connected on the polarity side of voltage transformer (VT) high-pressure side with test wire, be connected on the on high-tension side non-polar end of voltage transformer (VT) with another root test wire, be connected on test wire on the polar end of voltage transformer (VT) low-pressure side, be connected on test wire on the non-polar end of voltage transformer (VT) low-pressure side, unclamp after pressing test button in short-term this moment, if the secondary polarity of voltage transformer (VT) is correct, shows on the then intelligent electric current display device " polarity is correct ", otherwise show " incorrect polarity ".The present invention can accurately check the polarity of voltage transformer secondary winding, and mistake inserts when avoiding wiring; Improve work efficiency, ensured the stable operation of electric system.
Description of drawings:
Below in conjunction with accompanying drawing the present invention is described further:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a test philosophy synoptic diagram of the present invention.
Embodiment:
As shown in Figure 1, the device that is used for the test voltage mutual inductor polarity, comprise shell 1, the direct supply 4 of a 20V is set in the described shell 1, the positive pole of described direct supply 4 is connected A1 jack 2 and A2 jack 3 respectively with negative pole, described A2 jack 3 connects a switch 5, and an intelligent electric current indication mechanism 8 also is set in the described shell 1, and B1 jack 6 and B2 jack 7 are set respectively on the positive and negative binding post of described intelligent electric current indication mechanism 8.
As shown in Figure 2, A1 jack 2 links to each other with test wire L1; The two ends of test button 5 link to each other with test wire L2 with A2 jack 3 respectively; The positive pole of intelligent electric current display device 8 links to each other with B1 jack 6, and the negative pole of intelligent electric current display device A links to each other with B2 jack 7, and B1 jack 6 links to each other with test wire K1; B2 jack 8 links to each other with test wire K2.Because the present invention will be by being connected on the polarity side of voltage transformer (VT) high-pressure side with test wire, be connected on the on high-tension side non-polar end of voltage transformer (VT) with another root test wire, be connected on test wire on the polar end of voltage transformer (VT) low-pressure side, be connected on test wire on the non-polar end of voltage transformer (VT) low-pressure side, unclamp after pressing test button in short-term this moment, if the secondary polarity of voltage transformer (VT) is correct, shows on the then intelligent electric current display device " polarity is correct ", otherwise show " incorrect polarity ".The present invention can accurately check the polarity of voltage transformer secondary winding, and mistake inserts when avoiding wiring; Improve work efficiency, ensured the stable operation of electric system.
Claims (2)
1. device that is used for the test voltage mutual inductor polarity, comprise shell, it is characterized in that: the direct supply that a 20V is set in the described shell, the positive pole of described direct supply is connected A1 jack and A2 jack respectively with negative pole, described A2 jack connects a switch, an intelligent electric current indication mechanism also is set in the described shell, B1 jack and B2 jack are set respectively on the positive and negative binding post of described intelligent electric current indication mechanism.
2. the device that is used for the test voltage mutual inductor polarity according to claim 1 is characterized in that: at a main circuit current mutual inductor front end voltage table in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102274486A CN102096002A (en) | 2009-12-11 | 2009-12-11 | Device for testing polarity of voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102274486A CN102096002A (en) | 2009-12-11 | 2009-12-11 | Device for testing polarity of voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102096002A true CN102096002A (en) | 2011-06-15 |
Family
ID=44129173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102274486A Pending CN102096002A (en) | 2009-12-11 | 2009-12-11 | Device for testing polarity of voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102096002A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389439A (en) * | 2013-07-29 | 2013-11-13 | 国家电网公司 | CT (computed tomography) polarity detecting instrument |
| CN106324426A (en) * | 2013-01-30 | 2017-01-11 | 江苏省电力公司常州供电公司 | Four-star voltage transformer secondary polarity intelligent tester |
| CN114295891A (en) * | 2021-12-24 | 2022-04-08 | 兰州飞行控制有限责任公司 | Differential transformer sensor phase detection system, detection method and detector |
-
2009
- 2009-12-11 CN CN2009102274486A patent/CN102096002A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324426A (en) * | 2013-01-30 | 2017-01-11 | 江苏省电力公司常州供电公司 | Four-star voltage transformer secondary polarity intelligent tester |
| CN106324426B (en) * | 2013-01-30 | 2018-11-23 | 江苏省电力公司常州供电公司 | A kind of four wye voltage mutual inductor secondary polarity intelligent testers |
| CN103389439A (en) * | 2013-07-29 | 2013-11-13 | 国家电网公司 | CT (computed tomography) polarity detecting instrument |
| CN114295891A (en) * | 2021-12-24 | 2022-04-08 | 兰州飞行控制有限责任公司 | Differential transformer sensor phase detection system, detection method and detector |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |